简述布尔算符（OR）的作用。

简述产业集群的形成机理。

简述产业结构是指国民经济各个产业部门之间的相互关系。

农业产业化集群客户融信保业务品种仅限定为（）。

产业作为经济学的专门术语，有更严格的使用条件。下列属于产业的特点的是（）。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

分析广东省石化产业集群化的好处。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

目前广东已经形成了中国最大的电子信息产业集群，该产业集群位于（）